Key Lab for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China.
J Hazard Mater. 2011 Aug 15;192(1):368-73. doi: 10.1016/j.jhazmat.2011.05.037. Epub 2011 May 19.
Carbon and boron co-doped TiO(2) photocatalysts were prepared firstly by the gel-hydrothermal method, that is, synthesized through sol-gel process followed by hydrothermal in the glucose solution. The prepared photocatalysts were characterized by XRD, Raman spectra, TEM, N(2) physical adsorption, XPS, and UV-vis absorption spectra. It was found that the co-doped TiO(2) has a larger BET surface areas and a narrower band gap than undoped TiO(2). The experimental results show that the coke carbon generated on the carbon doped TiO(2) surface act as a photosensitizer and has the photosensitization effect under the visible light. Except for carbon sensitization effect, the boron and carbon co-doped TiO(2) has synergistic effect which is responsible for effective photo-degradation of 2,4-dichlorophenol in the visible light irradiation.
碳硼共掺杂 TiO(2) 光催化剂首先通过凝胶-水热法制备，即在葡萄糖溶液中通过溶胶-凝胶过程和水热反应合成。所制备的光催化剂通过 XRD、拉曼光谱、TEM、N(2)物理吸附、XPS 和紫外-可见吸收光谱进行了表征。结果发现，共掺杂 TiO(2) 的 BET 比表面积比未掺杂 TiO(2) 的更大，带隙更窄。实验结果表明，在碳掺杂 TiO(2) 表面生成的焦炭碳作为光增感剂，在可见光下具有光增感效应。除了碳敏化效应之外，硼和碳共掺杂 TiO(2) 还具有协同效应，这是其在可见光照射下有效降解 2,4-二氯苯酚的原因。
